"Thirty Years in Hell" or "From Darkness to Light" is an impressive autobiographical book by Bernard Fresenborg, which tells the story of his long journey from life underground and darkness to transformation and light. The author describes in detail his life full of crime, lawlessness and hopelessness, as well as the inspiring events that led him to convert to faith and change his life. Fresenborg reveals the tragic episodes of his past, including his involvement in criminal gangs and his time in prisons. However, thanks to his own internal transformations, he found inner strength and chose a new life. "Thirty Years in Hell" or "From Darkness to Light" is a story of rebirth, faith and hope that provides readers with important important lessons about how to dare to change your life for the better.